RESEARCH ON RECOMBINATION REACTIONS BETWEEN POSITIVE AND NEGATIVE IONS BY USING A CROSSED ION-BEAM METHOD

交叉离子束法研究正负离子复合反应

基本信息

批准号：
09440201
负责人：
TSUJI Masaharu
金额：
$ 8.96万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B).
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-09440201/
关键词：
ION BEAM POSITIVE ION NEGATIVE ION EXCIMER SPIN-ORBIT STATE RARE GAS ION EMISSION SPECTRUM NEUTRALIZATION REACTION 放電フロー法再結合反応クラスタリング

项目摘要

A crossed ion-beam apparatus of positive and negative ions was constructed, and applied to the following neutralization reactions leading to rare gas halide excimers :Ar^+(^2P_<1/2,3/2>) + SF_6^-→ArF(B,C,D) + SF_5, (1)Kr^+(^2P_<1/2>) + C_6F_5Cl^- →KrCl(B,D) + C_6F_5, (2a)Kr^+(^2P_<3/2>) + C_6F_5Cl^- →KrCl(B,C) + C_6F_5. (2b)ArF(B-X,C-A) and KrCl(B-X,C-A,D-X) excimers are observed in reactions (1) and (2), respectively. No significant change in ArF((B-X,C-A) excimers was found, when the Ar^+(^2P_<1/2>) spin-orbit component was removed by the addition of N_2 to Ar. This suggests that the Ar^+(^2P_<1/2>)/SF_6^- does not provide ArF^* excimer or it gives the same excimer band. The relative formation rates of KrCl(B : C : D) in reaction (2a) were 0.05 : 0.00 : 0.95, while those in reaction (2b) were 0.71 : 0.29 : 0.00. The formation rate of KrCl(C) was small in both reactions at low operating pressures below 10^<-3> Torr. It was therefore concluded that the small formation rate of KrCl(C) is not due to its relatively long radiative lifetime, but due to its intrinsic feature.In order to obtain detailed information on the reaction dynamics of recombination reactions, theoretical ab initio calculations have been carried out for the He_2^+/C_6F_6^- reaction leading to low lying He_2^* states.In a preliminary experiment of this research project, we discovered a number of new emissions from rare gas heterodimers and heterotrimers.

构建了阳性和负离子的交叉离子梁设备，并应用于以下神经化反应，导致罕见的气体卤化物进取剂：ar^ +（^2p_ <1/2,3/2>） + sf_6^ - →arf（b，c，c，c，c，d） + sf_5，（1） + sf_5，（1） →KRCL（B，D） + C_6F_5，（2A）KR^ +（^2p_ <3/2>） + C_6F_5CL^ - →KRCL（B，C） + C_6F_5。（2B）分别在反应（1）和（2）中观察到ARF（B-X，C-A）和KRCL（B-X，C-A，D-X）准分子。当arf^+（^2p_ <1/2>）ARF（^2p_ <1/2>）旋转 - 轨道成分通过向AR中添加去除AR。这表明AR^+（^2p_ <1/2>）/sf_6^ - 不提供ARF^*不提供excimer of Excimer或c的excimer，当AR^+（^2p_ <1/2>）旋转-orbit成分被去除时，没有发现ARF（（B-X，C-A）的显着变化（（b-x，c-a））反应（2a）为0.05：0.00：0.95，而反应（2B）的反应为0.71：0.29：0.00，KRCL（C）的形成速率很小。重组反应的反应动力学，对HE_2^+/C_6f_6^ - 导致低谎言HE_2^* eatter的Rection进行了理论计算。